Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionSmith, Moore & Co.
Latest Disclosed Ownership938 shares
Latest Disclosed Value $ 934,762
Smith, Moore & Co. reports 0.11% decrease in ownership of COST / Costco Wholesale Corporation

On May 5, 2026 - Smith, Moore & Co. filed a 13F-HR form disclosing ownership of 938 shares of Costco Wholesale Corporation (US:COST) valued at $934,651 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 939 shares of Costco Wholesale Corporation. This represents a change in shares of -0.11% during the quarter. The current value of the position is $902,197 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F COSTCO WHOLESALE CORPORATION COM Stock 22160K105 938 -1 -0.11 935 15.45 0.0680
2026-01-23 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 939 -196 -17.27 810 -22.95 0.0612
2025-11-12 2025-09-30 13F COSTCO WHSL CORP OM 22160K105 1,135 34 3.09 1,050 -3.58 0.0804
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 1,101 -213 -16.21 1,090 -12.39 0.0915
2025-05-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 1,314 -24 -1.79 1,243 1.47 0.1151
2025-02-13 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 1,338 196 17.16 1,226 21.05 0.1120
2024-11-12 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 1,142 -32 -2.73 1,013 1.40 0.0967
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 1,174 280 31.32 998 52.60 0.1029
2024-05-13 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 894 -26 -2.83 655 7.74 0.0698
2024-02-13 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 920 45 5.14 607 22.87 0.0716
2023-11-15 2023-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 875 29 3.43 494 8.57 0.0653
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 846 0 456 0.0580
2023-08-11 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 846 89 11.76 456 21.01 0.0580
2023-05-12 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 757 89 13.32 376 23.68 0.0511
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 668 88 15.17 305 10.95 0.0423
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 580 35 6.42 274 4.98 0.0416
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 545 29 5.62 261 -12.12 0.0403
2022-05-12 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 516 8 1.57 297 3.13 0.0405
2022-02-08 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 508 29 6.05 288 33.95 0.0400
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 479 479 215 0.0328
2021-02-16 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -1,538 -100.00 0 -100.00
2020-11-12 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 1,538 91 6.29 546 24.37 0.1134
2020-08-10 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 1,447 1,447 439 0.0970
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.